From 660d81dae895a61da5774bc70f43ef30fb878f64 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Fri, 31 Jan 2020 13:12:58 +0200
Subject: [PATCH] mac80211: consider WLAN_EID_EXT_HE_OPERATION for parsing CRC
Git-commit: 660d81dae895a61da5774bc70f43ef30fb878f64
Patch-mainline: v5.7-rc1
References: jsc#SLE-13430
We use the parsing CRC for checking if the beacon changed, and
if the WLAN_EID_EXT_HE_OPERATION extended element changes we
need to track it so we can react to that. Include it in the CRC
calculation.
Link: https://lore.kernel.org/r/20200131111300.891737-22-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
net/mac80211/util.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index ea7d277a8c45..20436c86b9bf 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -912,8 +912,12 @@ static void ieee80211_parse_extension_element(u32 *crc,
break;
case WLAN_EID_EXT_HE_OPERATION:
if (len >= sizeof(*elems->he_operation) &&
- len == ieee80211_he_oper_size(data) - 1)
+ len == ieee80211_he_oper_size(data) - 1) {
+ if (crc)
+ *crc = crc32_be(*crc, (void *)elem,
+ elem->datalen + 2);
elems->he_operation = data;
+ }
break;
case WLAN_EID_EXT_UORA:
if (len == 1)
--
2.16.4